History of Offshore wind power in Timeline

By Popular Timelines Editorial Team · Updated: July 18, 2026

Offshore wind power involves harnessing wind energy from large-scale turbines installed in bodies of water, typically on the continental shelf. These installations benefit from stronger, more consistent wind speeds compared to land-based sites, allowing for higher energy yields and greater power capacity. Modern projects utilize both fixed-bottom foundations in shallower waters and innovative floating turbine technology to reach deeper ocean areas where wind resources are most abundant. While offshore wind offers significant potential for large-scale renewable energy production and can be situated closer to coastal population centers, it faces challenges such as higher capital costs, complex maritime logistics, and potential impacts on marine ecosystems. Despite these hurdles, offshore wind is a critical pillar in the global transition toward decarbonization, helping countries meet climate goals by providing a reliable, utility-scale source of clean electricity that reduces dependence on fossil fuels.

1991: Installation of Vindeby Offshore Wind Farm

In 1991, Denmark marked a significant milestone in renewable energy by installing Vindeby, which became the world's first offshore wind farm.

2003: EIB Offshore Wind Investment Commencement

Starting in 2003, the European Investment Bank (EIB) began sponsoring offshore wind projects across Europe, ultimately supporting 34 different initiatives in countries including Belgium, Denmark, Germany, France, the Netherlands, Portugal, and the United Kingdom.

2004: United Kingdom Offshore Wind Development Initiation

Starting in 2004, the United Kingdom began a three-phase development strategy for offshore wind farms in the North Sea, spanning coastal, off-coastal, and deep offshore installations.

2009: Assessment of European Offshore Wind Turbine Capacity

During 2009, European offshore wind turbines had an average nameplate capacity of 3 MW, with projections suggesting that future models would reach a 5 MW capacity.

2010: Economic Challenges of Offshore Wind Power

In 2010, the US Energy Information Agency identified offshore wind power as the most costly large-scale energy technology. During this same period, offshore wind projects faced significant economic hurdles compared to onshore alternatives, with development costs reaching between 2.5 and 3.0 million Euro per megawatt. Additionally, the industry saw market consolidation in 2010, with Siemens and Vestas acting as the primary turbine suppliers for 90% of the sector, while firms such as Ørsted A/S, Vattenfall, and E.on emerged as the leading operators.

2011: Assessment of Offshore Wind Competitiveness and European Capacity Expansion

In 2011, Ørsted projected that offshore wind would achieve competitive parity with fossil fuels within 15 years, while noting the continued necessity for state and pension fund support. Additionally, by the end of 2011, Europe operated 53 offshore wind farms with a capacity of 3,813 MW, with an additional 5,603 MW under construction, representing an investment value of €8.5 billion.

2012: Bloomberg Cost Estimate for Offshore Wind Energy

In 2012, Bloomberg conducted an analysis and estimated that the cost of generating electricity from offshore wind turbines was approximately €161, or US$208, per megawatt-hour (MWh).

2012: Introduction of Smart from the Start initiative in the United States

In 2012, the United States implemented a regulatory framework known as 'Smart from the Start' to streamline the planning and permitting processes for offshore wind energy projects, mirroring successful strategies used in Denmark.

2013: Assessment and capacity contribution of offshore wind power

In 2013, an engineering review questioned the economic viability of the offshore wind industry, while data confirmed that offshore wind projects accounted for 1,567 MW of the 11,159 MW of new wind capacity added globally during that year.

January 2014: European Offshore Wind Capacity Milestone

As of January 2014, Europe reached a total installed offshore wind capacity of 6,562 MW across 69 constructed wind farms, with the United Kingdom leading production followed by Denmark and Belgium.

May 2014: Chinese Offshore Wind Capacity Shortfall

As of May 2014, the total installed offshore wind capacity in China reached only 565 MW, significantly trailing behind the government's previously established goals.

2015: European Offshore Wind Expansion Milestone

By the end of 2015, the European offshore wind sector reached a significant milestone with 3,230 turbines installed at 84 wind farms across 11 countries, achieving a total capacity of 11,027 MW.

2015: Offshore Wind Power Market Concentration and Capacity Milestones

In 2015, the global offshore wind market was highly concentrated, with Siemens Wind Power holding a 63% market share of the 11 GW capacity. Additionally, 3,755 MW of new capacity was brought online in 2015, contributing to a total of approximately 12 GW of operational offshore wind power capacity primarily located in Northern Europe.

2015: Initial 2015 Capacity Target

The Chinese government had set a target to achieve 5 GW of installed offshore wind power capacity by the year 2015.

2016: China Offshore Wind Growth

In 2016, China added 832 MW of offshore wind capacity, with 636 MW of that capacity consisting of components manufactured domestically within China.

2016: Offshore Wind Auction Price Milestones

In 2016, competitive government tenders for offshore wind projects resulted in record-low costs, specifically achieving €54.5 per MWh for the Borssele 3&4 project and €49.90 per MWh for the Kriegers Flak wind farm.

2016: OECD Offshore Wind Economic Forecast

In 2016, the Organisation for Economic Co-operation and Development issued a report predicting that the offshore wind power industry would become a significant driver of the global ocean economy.

2016: Offshore Wind Contracts Undercut Long-Term Price Projections

In 2016, the cost of offshore wind power projects for Borssele and Kriegers reached levels significantly lower than the projected minimum prices anticipated for the year 2050.

September 2017: United Kingdom Offshore Wind Strike Price Milestone

In September 2017, the United Kingdom awarded contracts for offshore wind power at a strike price of £57.50 per MWh, marking a significant milestone where wind energy became more affordable than nuclear power and highly competitive with gas-based energy sources.

2017: Global offshore wind capacity reached 20 GW

By the end of 2017, the cumulative worldwide installed capacity for offshore wind power had successfully reached the 20 GW mark.

2017: European Price-Competitiveness

During 2017, offshore wind power in Europe successfully reached a level of price-competitiveness that allowed it to compete directly with conventional power sources.

2017: Baseline Offshore Wind Capacity

In 2017, the global offshore wind capacity served as the baseline, which is expected to see an 80-fold increase by 2050.

2017: Offshore Wind Industry Supply Bottlenecks

In 2017, the offshore wind power sector faced ongoing challenges with industrialization, specifically marked by significant supply bottlenecks that restricted the growth and deployment of installations.

September 2018: Vineyard Wind Contract Awards

In September 2018, official contracts were awarded for the Vineyard Wind offshore project located in Massachusetts, USA, securing pricing between $65 and $74 per MWh.

2018: Expansion and performance of global offshore wind in 2018

In 2018, offshore wind accounted for 0.3% of global electricity, while the industry added 4.3 GW of new capacity and Denmark reported that 15% of its total electricity supply originated from offshore wind projects.

2018: Revision of the Renewable Energy Directive

In 2018, the European Union updated the Renewable Energy Directive to streamline and simplify the permitting procedures for new wind energy projects, aimed at accelerating development in the sector.

2019: Growth in average turbine capacity in 2019

During the year 2019, the technological trend in the offshore wind sector saw the average size of newly installed turbines increase to 7.2 MW.

2019: EIB Maritime Renewable Energy Funding Initiative

In 2019, the European Investment Bank initiated a period of significant financial support for maritime renewable energy, which continued through 2023, totaling €3.7 billion in funding.

2019: Sharp Decline in Offshore Wind Costs

In 2019, the cost for installed offshore wind turbines experienced a significant 30% reduction, reaching $78/MWh, which represented a faster cost decline compared to other renewable energy sources.

2019: Offshore Wind Cost Reduction

In 2019, the cost of offshore wind power saw a significant decrease, reaching $78/MWh, marking a notable change from its historically higher costs compared to onshore wind.

2019: Baseline for Cost Comparison

The year 2019 serves as the baseline for a comparative analysis of wind energy costs, during which offshore wind experienced a 36% price increase leading up to 2023, while onshore wind costs saw a much smaller 5% increase over the same period.

2020: European Dominance in the Global Offshore Wind Market

As of 2020, European companies maintained a dominant position in the industry, representing 90% of the total global offshore wind power market.

2020: Technical Constraints and Advancements in Deepwater Offshore Wind

As of 2020, offshore wind energy production in deep waters remained technically challenging; however, the development of floating wind turbine technology emerged as a critical pathway for enabling future deepwater wind power projects.

2020: Regional Significance and Global Share

By 2020, offshore wind power established itself as a significant component of northern Europe's power generation, even though it still accounted for less than 1 percent of the total electricity generation worldwide.

2020: Projected Cost Reduction Through Innovation

It was theorized by 2020 that advancements and innovation at a larger scale would successfully deliver a 25% cost reduction in offshore wind power generation.

2020: Secondary 2020 Capacity Target

The Chinese government established an ambitious long-term objective to reach 30 GW of installed offshore wind capacity by the year 2020, aiming to surpass international capacity levels.

2020: Increase in average turbine capacity in 2020

The average size of offshore wind turbines continued its upward trajectory in 2020, reaching an average of 8.2 MW per unit.

2021: Baseline offshore wind cost levels

In 2021, the levelized cost of energy for offshore wind was established as the baseline for future projections, specifically costing $75/MWh for fixed-bottom installations and $207/MWh for floating offshore wind projects.

2021: Completion of North Sea Offshore Wind Expansion Phase

The year 2021 marked the conclusion of the specified three-phase development period for North Sea offshore wind projects in the United Kingdom, encompassing coastal to deep offshore infrastructure.

2022: Signing of the Marienborg Declaration

In 2022, EU Baltic Sea states signed the Marienborg Declaration, a formal commitment to scaling offshore wind energy infrastructure across the region.

2022: Increase in Offshore Wind Electricity Costs

In 2022, the International Renewable Energy Agency reported that the cost of electricity generated by new offshore wind projects rose to USD 0.081/kWh, up from USD 0.079/kWh in the prior year, marking a shift against the broader downward pricing trend seen in solar and onshore wind power during that same 2022 period.

2022: Offshore Wind Industry Growth Record

In 2022, the offshore wind industry achieved its second-largest annual growth by adding 8.8 GW of capacity, bringing the total global capacity to 64.3 GW, which represents a 16% year-over-year increase.

2022: Global Offshore Wind Power Capacity Report

In 2022, the total worldwide offshore wind power nameplate capacity reached 64.3 gigawatts, with China, the UK, and Germany dominating the market share. During 2022, the 1.4 GW Hornsea Project Two was recognized as the world's largest operational offshore wind farm.

2023: Start of Projected Market Challenges Period

Beginning in 2023, the industry faced market challenges in Europe and the United States that threaten to slow down deployment rates, limiting installations to only a third of the expected capacity through 2027.

2023: Completion of EIB Funding Cycle

By the end of 2023, the European Investment Bank concluded a funding phase for maritime renewable energy that provided a total of €3.7 billion in investments since 2019.

2023: US Offshore Wind Cost Disparity

In 2023, the construction costs for offshore wind projects in the United States reached US$4,000 per kilowatt, significantly higher than the US$1,363 per kilowatt cost recorded for onshore wind farms during that same year.

2027: End of Five-Year Installation Forecast Window

As of 2027, the industry is expected to have completed only one-third of its forecasted growth due to the market hurdles experienced in the U.S. and European sectors during the preceding five-year window starting in 2023.

2030: Projected Offshore Wind Market Share and Employment

By 2030, the offshore wind sector is expected to account for 8% of the total ocean economy, support 435,000 jobs, and contribute $230 billion in value according to 2016 projections.

2030: Target for Baltic Sea Offshore Wind Capacity

Following the Marienborg Declaration, Baltic Sea states set a collective target to have 19.6 gigawatts of offshore wind energy capacity in active operation by 2030.

2032: Long-term Offshore Wind Capacity Projection

The Global Wind Energy Council (GWEC) projected by 2032 that the industry will undergo a major expansion of 380 GW, ultimately aiming for a total global capacity of 447 GW.

2035: NREL offshore wind cost reduction forecast

By 2035, the National Renewable Energy Laboratory projects that the levelized cost for fixed-bottom offshore wind will drop to $53/MWh, while floating offshore wind costs are expected to decrease significantly to $64/MWh, driven by a ninefold increase in global deployment and infrastructure improvements.

2050: Original 2050 Price Projections for Offshore Wind

As of 2050, historical predictions had previously set a high benchmark for the cost of offshore wind power that was surpassed by actual market performance as early as 2016.